Let me be the first to comment that the team at InterKnowlogy who build this Surface application had an absolute blast doing it.  Building out Lachlan's dream was a true pleasure.  There was an attention to design and usability that you just don't see in other app platforms.  We are currently working on the version 2 of this application and i'm told it's actually going to be featured in the microsoft executive retreat hosted by Steve Ballmer.  We are racing the deadlines as i write this...  -tim